[Bug libstdc++/96657] [9/10/11 Regression] libsupc++.a missing required functions from src/c++98/atomicity.cc when atomic builtins are not supported

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96657

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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   Target Milestone|---                         |9.4
             Target|                            |sparc, arc